Improved die-peess



@uitrit 'tatrs @Winry JOHN MAYS AND E. w. Buss, OF BROOKLYN, NEW YORK.l

Letters Patent lVo. 73,823, dated January/V28, 1868.

IMPROVE!) DIE-PRESS.

TO ALL WHOM IT MAY CONCER: i Y, Y

Be it known that we, JOHN MAYS and E. W. BLISS, ot' Brooklyn, in the county of Kings, and State of New York, have invented a new and uset'nl .Improvement in a De-Press; and we do hereby declare that the following is a full, clear, and exact description thereof', which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which-`- Figure 1 is a side view of' our improved die-press, partly in section, showing the improved sliding head and guides.

Il Figure 2, atop view.

Figure 3, a view ot' the improved sliding head detached.

Similar letters of reference indicate corresponding parts.

This invention relates to an improvement in a die-press for heavy work, and consists inl forming the sliding head or plunger with guides, working in brass gibs, set in solid-east boxes, and arranged in such manner as to be adjustable, to compensate for wear, and to bc perfectly rigid and true in operation.

The ordinary sliding head or plunger of die-presses is made with square sides, working in boxes, made in two parts, one of' which is a cap or saddle, screwed or bolted on. '.lhis mode of' construction is defective, and the sliding head 0r plunger is not adjustable, and is liable to work loose and get out ot Order under the strain of cutting large-sized blanks, whereas the greatest rigidity and accuracy in the movement of the sliding head are necessary to save the dies and produce good work. By our improved bearings, fitted in adjust-able gibs, in solid boxes, the strain is equalized or distributed, so that in cutting the largest-sized metal blanks, say twen tyi`our inch plates, there can be no variation of movement, which occurs in the old press, and is so destructive to the dies. The drawing represents a die-press adapted to band-power, in which- A is the main standard, B the bed-plate, and C a treadlc for working the sliding head or plunger D, The boxes E E, in which the sliding head D works, have solid sides cast with the standard A, as shown clearly in fig. 2. The sliding head D has the form, in section, of a St. Georges or square cross, as seen clearly in fig. 2,

the ends of which are V-shaped, and are fitted in brass gibs a a, set into the corners of the boxes E E, and provided with set-screws c c, to adjust the bearings of the sliding head.

Having described our invention, we claim as new, and desire to secure by Letters Patent-` The solid boxes E E, the sliding head D, with V-bearings, and the adjustable gibs a a, all constructed and arranged with the lever, substantially as and for the purpose herein described.

JOHN MAYS,

E. W. BLlSS. Witnesses:

WM. F. MeNAMARA, ALEX. F. ROBERTS. 

